Glenn Alterman Books

"Why is this book different from any other published monologue book? ~ The monologues are rated according to content, ~ They are categorized by genre, ~ And have an exact running time. ~ There is a...

The perfect audition monologue

By Glenn Alterman

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Creating your own monologue Glenn Alterman.

By Glenn Alterman

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An actor's guide--making it in New York

By Glenn Alterman

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.